"I think that's fair enough to say, 'hey, can you be a bit discreeter, go up on the grass or something like that ... that's a high traffic area on the side of the pool in the middle of summer on a hot day," he said.

He later tweeted he supported breastfeeding in public but said it should be done discreetly as a "common courtesy to others".

Tanya Demello, 34, is among 18 women who have indicated on Facebook they will attend the nurse-in at the Woonona Beach pools, 11am.

"I put myself in the position of the mother who got asked to [move] and I would just be really embarrassed and angry if that happened to me," Ms Demello said.

"I want to support her and support all women's right to breastfeed wherever they are.

"Also, I am quite shy about breastfeeding in public. Parent's rooms are usually really hot and uncomfortable and cramped and disgusting so I'm trying to be more comfortable in being able to feed wherever I want to."